योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-100, verse-20

संविदेव नृणां जीवः स यथा दृढभावनः ।
तथा सुखी वा दुःखी वा भवेदित्येष निश्चयः ॥ २० ॥

saṃvideva nṛṇāṃ jīvaḥ sa yathā dṛḍhabhāvanaḥ ,
tathā sukhī vā duḥkhī vā bhavedityeṣa niścayaḥ 20

20. saṃvit eva nṛṇām jīvaḥ sa yathā dṛḍhabhāvanaḥ
tathā sukhī vā duḥkhī vā bhavet iti eṣa niścayaḥ

20. nṛṇām jīvaḥ saṃvit eva saḥ yathā dṛḍhabhāvanaḥ
tathā sukhī vā duḥkhī vā bhavet eṣaḥ iti niścayaḥ

20. Consciousness (saṃvit) itself is the animating principle (jīva) of human beings. Just as one's conviction (bhāvanā) is firm, so that person becomes happy or unhappy. This is the firm conclusion.

Words meanings summery:

• संवित् (saṁvit) - consciousness, knowledge, understanding

• एव (eva) - indeed, only, just, exactly

• नृणाम् (nṛṇām) - of humans, of men, of people

• जीवः (jīvaḥ) - living being, soul, life principle, animating principle

• स (sa) - he, that

• यथा (yathā) - as, just as, according to

• दृढभावनः (dṛḍhabhāvanaḥ) - one whose conviction is firm, having firm intent, firm-minded

• तथा (tathā) - so, thus, accordingly, in that manner

• सुखी (sukhī) - happy, joyful, fortunate

• वा (vā) - or

• दुःखी (duḥkhī) - unhappy, sorrowful, miserable

• वा (vā) - or

• भवेत् (bhavet) - may become, should become, might be

• इति (iti) - thus, so (indicating conclusion or quotation)

• एष (eṣa) - this

• निश्चयः (niścayaḥ) - certainty, conviction, conclusion, firm decision

Words meanings and morphology

संवित् (saṁvit) - consciousness, knowledge, understanding

(noun)

Nominative, feminine, singular of saṃvit

saṁvit - consciousness, knowledge, understanding

Prefix: sam

Root: vid (class 2)

एव (eva) - indeed, only, just, exactly

(indeclinable)

नृणाम् (nṛṇām) - of humans, of men, of people

(noun)

Genitive, masculine, plural of nṛ

nṛ - man, human being, person

जीवः (jīvaḥ) - living being, soul, life principle, animating principle

(noun)

Nominative, masculine, singular of jīva

jīva - living being, soul, life

Root: jīv (class 1)

स (sa) - he, that

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

यथा (yathā) - as, just as, according to

(indeclinable)

दृढभावनः (dṛḍhabhāvanaḥ) - one whose conviction is firm, having firm intent, firm-minded

(adjective)

Nominative, masculine, singular of dṛḍhabhāvana

dṛḍhabhāvana - firm-minded, having firm conviction

Compound type : bahuvrihi (dṛḍha+bhāvana)

• dṛḍha – firm, strong, solid
  adjective (masculine)
  Past Passive Participle
  Derived from root dṛh (to be firm, strong)
  Root: dṛh (class 1)
• bhāvana – thought, conception, conviction, feeling, imagination
  noun (masculine)
  Derived from root bhū (to be, become), with causative meaning (to cause to be)
  Root: bhū (class 1)

तथा (tathā) - so, thus, accordingly, in that manner

(indeclinable)

सुखी (sukhī) - happy, joyful, fortunate

(adjective)

Nominative, masculine, singular of sukhin

sukhin - happy, joyful, possessing happiness

वा (vā) - or

(indeclinable)

दुःखी (duḥkhī) - unhappy, sorrowful, miserable

(adjective)

Nominative, masculine, singular of duḥkhin

duḥkhin - unhappy, sorrowful, possessing sorrow

वा (vā) - or

(indeclinable)

भवेत् (bhavet) - may become, should become, might be

(verb)

3rd person , singular, active, optative (vidhi-liṅ) of bhū

Root: bhū (class 1)

इति (iti) - thus, so (indicating conclusion or quotation)

(indeclinable)

एष (eṣa) - this

(pronoun)

Nominative, masculine, singular of etas

etas - this, this one

निश्चयः (niścayaḥ) - certainty, conviction, conclusion, firm decision

(noun)

Nominative, masculine, singular of niścaya

niścaya - certainty, conclusion, firm determination

Prefix: nis

Root: ci (class 5)